- Double Dam features one interior stabilizing panel which results in two constrained compartments.

- Triple Dam features two internal stabilizing panels which results in three constrained compartments for even greater stability.

- Double/Triple Dam use any available water source for filling. When the dam is full, and the water level outside of the dam is up to ¾ of the filled height (25% freeboard) that makes the filled dam heavier than the surrounding water. The integral stabilizing panel(s) force the dam to maintain an oval shape so it cannot roll.

- No anchors or straps are needed. Double/Triple Dam are engineered using the known properties of water and material weight. Anchors and straps are only needed on single chambered tube systems that would otherwise have no stability.

- Check out this time lapse demonstration. www.youtube.com/watch?v=g4NNZUBm39I

- Yes. They are designed to be drained and put away for repeated use. That’s a major advantage compared to conventional methods such as sandbagging or dirt berms.

- Double/Triple Dams are made in standard sizes (1’ increments) from 2’ high up to 8’ high, by 50’ long. Longer sections (up to 100’ long) are available in any of the heights.

- Since pumps vary in size and the number of gallons pumped per minute is different with every pump, the time to fill is totally dependant on the pump selection in combination with the dam size.

- Water volume required to fill each dam will vary by dam size. Smaller dams (eg 24”x50’) hold ~ 2500 gallons while larger dams (eg 8’x50’) hold ~ 45,000 gallons.

- The largest size available is 8’ high. It will hold back up to 6’ of standing water.

- To extend the length of protection required the dams are simply overlapped at the ends. The amount of overlap is generally equal to at least the inflated height.

- Polyester reinforced PVC fabric. The PVC coating is specifically blended to resist the effects of UV exposure as well as being resistant to mold and mildew.

- Yes. Minor holes and tears can be easily repaired.

- A 3’ high sandbag dyke (made according to the recommendation of the US Army Corps of Engineers) would require ~30 sandbags per linear foot. Using conventional filling and placing methods, a rate of 12 bags per manhour can be applied, taking ~125 manhours to build a 50’ long dyke at 3’ high, plus a cost of up to $5.00 per bag.

A Double/Triple Dam at 3’x50’ can be deployed by 2 people in a few minutes and pumped full of water in as little as 30 minutes. Cleanup time and cost benefits are even greater, especially when the reuse of Double/Triple Dam is considered.

- Not usually. You wouldn’t keep your toolbox full of just one type of screwdriver, right? Proper preparation most often requires a variety of products.